Herbicidal compositions containing n-(1,1-dialkyl-3-chloroacetonyl) benzamides

ABSTRACT

Biocidal compositions which contain as the active ingredient a compound belonging to the class of N-(1,1-dialkyl-3-mono(di- and tri)-chloroacetonyl)-3-(or -3,4-, -3,5- or -3,4,5-) substituted benzamides and their use in controlling plant growth and phytopathogenic fungi.

United States Patent 1191 1111 3,751,239 McNulty et al. Aug. 7, 1973 HERBICIDAL COMPOSITIONS [51] Int. Cl A0ln 9/20 CONTAINING [58] Field of Search 71/118 N-( l,1-DlALKYL-3-CHLOROACETONYL) I BENZAMIDES [56] References Cited [75] lnventors: Patrick J. McNulty, Wyndmoor; UNITED STATES PATENTS Colin Swithenbank Perkasie- 3,574,745 4/1971 Little 71/118 i f Warmmw 3,690,864 9 1972 Hamm et al. 71 118 William C. Von Meyer, WlllOW Grove of Primary Examiner-James 0. Thomas, Jr. [73] Assignee: Rohm and Haas Company, Attorney-G. W. F. Simmons and C. A. Castellan Philadelphia, Pa.

[22] Filed: Apr. 19, 1971 [57] ABSTRACT [2i] Appl. No.: l35,388 Biocidal compositions which contain as the active ingredient a compound belonging to the class of h Related Apphcauon Data N-(l,l-dialkyl-3-mono(diand tri)-chloroacetonyl)- [62] D|v|s1on ofSer. No. 829,084, May 29, I969, Pat. No. 3 (or 3 or 3 Substituted benzamides and 1661991 their use in controlling plant growth and phytopathof 52 us. 01 71/118, 71/120, 71/122,

9 Claims, No Drawings by. t

HERBICIDAL COMPOSITIONS CONTAINING N-( l ,1 DIALKYL-3-CI'ILOROACETONYL) BENZAMIDES JFhis application is a division of US. Ser. No. 829,084, filed May 29, 1969, now US. Pat. No. 3,661,991.

This invention is concerned with novel compounds belonging to the class of N-(l,l-dialkyl-3- chloroacctonyl)-3-(or -3,4-, -3,5- or -3,4,5-) substituted benzamides. Their structure may be represented by the formula:

wherein X and X are selected from the group consisting of hydrogen, bromo, chloro, fluoro, methyl, ethyl and trifluoromethyl groups with the proviso that only one of X and X may be hydrogen;

Y is hydrogen, bromo, chloro, fluoror or methyl;

R and R are individually selected from the group consisting of methyl and ethyl; and

n is an integer from O to 2 inclusive. At times these compounds will hereinafter be referred to as N- 1,1-dialkyl-3-chloroacetonyl) benzamides.

The novel compounds of this invention provide a new class of selective herbicides. They are effective at low dosage rates and are particularly active by preemergence-type application. Many of the major economic crops are tolerant to them. These compounds also possess fungicidal activity, particularly against Phycomycetes.

Related structures are known in the literature. Gabriel, Berichte 46, 1319 (1913) reported the preparation of C.,H CONH(CH COCl-l by hydrolysis of the corresponding tetramic acid ester. These compounds are not known to be biological toxicants.

The, novel N-(l,1-dia1ky1-3-chloroacetonyl) benzamides are of three types, monochloro (Formula II), dichloro (Formula;l l1) and trichloro (Formula IV):

Typical compounds within the scope of Formula 1 include the following: N-(1 l-dimethyl-3-chloroacetonyl)-3- chlorobenzamide N-(l ,1-diethyl3-chloroacetonyl)-3-chlorobenzamide N-( l ,1-dimethyl-3-chloroacetonyl)-3,5- dichlorobenzamide N-( 1 ,1-dimethyl-3-chloroacetonyl)-3-brom0-5- chlorobenzamide N-(1,1-dimethyl-3-chloroacetonyl)3-chloro-5' methylbenzamide N-(1,1-dimethyl-3-chloroacetyonyl)-3-fluoro-5-methyl-benzamide N-( l ,l-dimethyl-3-chl0roacetonyl)-3-ethyl-5- methylbenzamide N-(1,1-dimethyl-3-chloroacetonyl)-3-chloro-4- methylbenzamide N-(1,1-dimethyl-3-chloroacetonyl)-3,4,5-. trichlorobenzamide I N-(1,l-dimethyl-3-chloroacetonyl)-3,5-dichloro-4- methyl-benzamide N-(1,1-dimethyl-3-chloroacetonyl)-3 ,5-dibromo-4- chloro-be'nzamide N-(1,1-dimethyl-3 ,3-dichloroacetonyl)-3- chlorobenzamide N-( 1 l -dimethyl-3,3-dich1oroacetonyl)-3- ethylbenzamide N-( l ,l -dimethyl-3,3-dichloroacetonyl)-3- fluorobenzamide N-(1,1-dimethyl-3,3-dichloroacetonyl)3- methylbenzamide N-(1,1-dimethyl-3,3-dichloroacetonyl)-3-chloro-4- methyl-benzamide N-(1,l-dimethyl-3,3-dichloroacetonyl)-3,5-

dimethylbenzaide N-(1,1-dimethyl-3 ,3-dichloroacetonyl)-3 ,4,5- trichlorobenzamide N-( 1,1-diemthyl-3 ,3-dichloroacetonyl)-3,5-dichloro-4- methyl-benzamide N-( 1,1-dimethyl-3 ,3-dichloroacetonyl)-3,5-dichloro-4- bromo-benzamide I N-(1,1-dimethyl-3,3,3-trichloroacetonyl)-3- chlorobenzamide N-(1,1-dimethyl-3,3,3-trichloroacetonyl)-3- methylbenzamide N-(1,l-dimethyl-3,3,3-trichloroacetonyl)-3' bromobenzamide V N-(1,1-dimethyl-3,3,3-trichloroacetonyl)-3- trifluoromethyl-benzamide N-(1,1-dimethyl-3,3,3-trichloroacetonyl)-3-chloro-4- methyLbenzamide N-( l ,l-dimethyl-3,3,3-trichloroacetonyl)-3,5-dimethyl-benzamide V N-( 1,l-dimethyl-3,3,3-trichloroacetonyl)-3-chloro-5 fluoro benzamide N-( l ,1-climethyl-3,3,3-trichloroacetonyl)-3,4,5-trichloro-benzamide N-(1,1-dimethy1-3,3,3-trichloroacetonyl)-3,5- dichloro-4-methylbenzamide N-( l,l-dimethyl-3,3,3-trichloroacetonyl)-3,4,5- trimethyl-benzamide The novel N-(1,1-dialkyl-3-chloroacetonyl) benzamides of Formula 11 may be prepared by the chlorination of the corresponding N-(1,l-dialky1-2propyny1) benzamide (Formula V), which produces a 2 phenyl 4,4-dialkyl 5-chloromethylene-oxazoline (Formula V1), usually as the hydrochloride, and this is then hy drolyzed to the N-(l,l-dialkyl-3-chloroacetonyl) benzamide (Formula II). The following equation depicts this reaction:

X n v m m in 5 Compounds of the type of Formula V are known in the literature. They may be prepared by the reaction of a benzoyl chloride with the appropriate propargyl amine in the presence of an acid acceptor in accordance with the following equation n I Y-o 0 oi+ Mini-050a FormulaV This amidation reaction is conveniently carried out in the presence of an inert organic solvent in the temperature range of 0 to 50 C.

When a compound of Formula II is desired, the chlorination of a compound of Formula V is carried out in the presence of a solvent in which the starting benzamide (Formula V) is substantially soluble, but in which the oxazoline hydrochloride of Formula VI is essentially insoluble. In this manner the oxazoline hydrochloride is removed from the sphere of the reaction and over-chlorination is avoided. Otherwise compounds of Formula Vll result. 'Suitable' solvents for this reaction include ethers, such as ethyl ether and dioxane; chlorinated solvents, such as ethylene dichloride; and esters such as ethyl acetate. In preparing the mono- -chloroacetonyl derivatives (Formula II) the use of an excess of chlorine is to be avoided. Other chlorinating agents, such as N-chlorosuccinimide and sulfuryl chloride, may be used, but chlorine is preferred. A catalyst such as phosphorous trichloride sometimes aids the r'e-' action. The chlorination reaction may be run in'the temperature range of to 250 C, preferably 0 400 C. In cases where the nitrogen atom of the oxazoline ring is highly sterically hindered, the hydrochloride of the oxazoline does not precipitate and care must be taken to avoid overchlorination. In these cases the chloromethylene oxazoline (thefree base of a Formula VI compound) is isolated upon removal of the solvent.

It should be noted that the stereochemistry of the hydrogen and chlorine substiutents on the exocyclic 5- methylene group of Formula VI compounds has not been determined, but a single isomer is indicated by the sharpness of the nmr spectra. Previous reports on the stereochemistry of additions to acetylenes'have shown that a prediction would be dangerous. e.g. see Fahey acetic acid, preferably with acidic catalysts. lf'desired. a mineral acid such as hydrochloric or sulfuric acid. may be used to facilitate the reaction. The hydrolysis may be run in the temperature range of room temperature to reflux. The hydrolysis times will vary from a few minutes to several days depending upon the oxazoline hydrochloride being hydrolyzed, the temperature of hydrolysis and the solvent. Optimum conditions vary for the specific hydrolysis to be undertaken. It is desirable to avoid conditions which would give hydrolysis at the amide likage of the desired benzamide into its component parts. One convenient method for isolating the benzamides of Formula ll is to add water to the reaction mixture in such an amount to just start precipitation and to allow the product to crystallize out. In this manner products requiring no further purification are often isolated.

Goodman and Winstein, J. Am. Chem. Soc. 79, 4789 (I957) have reported on the hydrolysisof a related oxazolinium bromide. They noted that the cleavage of the ring occurred at the C-N linkage and resulted in a henzoic acid ester rather than a benzamide.

A compound of the type of Formula Ill may be prepared by the chlorination of a compound of Formula VI to give a 2 -phenyl-4,4-dialkyl-5-chloro-5- dichloromethyl-oxazoline hydrochloride, which upon hydrolyiss gives an N-(l,l-dialkyI-3,3- dichloroacet'onyl) benzamide (Formula III). The following equation depicts this: 7

The cholorination of a compound of Formula Vl is preferably run in a solvent. Solvents of the class of chlorinated hydrocarbons, such as carbon tetrachloride, ethers and esters are suitable. Chlorine is the preferred chlorinating agent although other chlorinating agents well known in. the art may be used. Exeesses of the chlorinatirig agent up to two times the calculated amount may be used. The reaction temperature may be in the range of 50 to 250 C, preferably 0 C.

The hydrolysis oia compound of Formula VII to give a compound of Formula III is carried out in the same manner as described above for the hydrolysis of a compound of Formula VI.

A compound of Formula I may be produced by the chlorination of a compound of Formula ll or III. The chlorination is preferably run in a solvent such as a cb'lorinated'hydrocarbon, e.g. carbon tetrachloride, an ether or an ester. The reaction temperature may be in the range of 50 to 250 C, preferably 0 to 100 C. A catalyst such as ultraviolet light, ferric chloride or benzoyl peroxide may be used to facilitate the reaction.

An alternate method for the preparation ofthe coin pounds of Formula 1 is by the chlorination of the parent N-(1,1-dialkyl-3-acetonyl) nuclear-substituted benzamide. The following equation depicts this:

(VIII The same chlorinating conditions as given above for the chlorination of a compound of Formula 11 or 111 may be used. Mixtures of compounds of Formula 11, 111 or IV may result. This method is best suited for the preparation of a compound of Formula IV since this avoids a separation of a mixture.

The benzamide structures of compounds of Formulas 11, Ill and IV were confirmed by their ir and/or nmr spectra.

14 and 15 are set forth below.

EXAMPLE 8 Preparation of N-( l ,1-dimethy1-3-chloroacetonyl)-3,5- dichlorobenzamide a. Preparation of 2-(3,5-dichloropheny1)-4,4- dimethyl-S-chloromethylene-oxazoline hydrochloride A stream of chlorine was rapidly passed into a solution of N-(1,1-dimethylpropynyl)-3 ,5- dichlorobenzamide (200g-., 0.782 mole) in ethyl acetate (600 ml.) at 60 C., with stirring until the theoretical amount (55.4 g., 0.78 mole) was absorbed as measured by an in-line flow meter. During the addition a solid separated and after cooling was filtered off and dried to give 254.4 g. of solid melting at 154 157 C. This was a quantitative yield of 2-(3,5-dichlorophenyl)- 4,4-dimethyl-5-chloromethylene-oxazoline hydrochloride.

b. Preparation of N-( l ,1'-dimethyl-3- chloroacetonyl)-3,S-dichloro benzamide 2-(3,S-Dichlorophenyl)-4,4-dimethyl-5- chloromethylene-oxazoline hydrochloride (245g., 0.75 mole) was heated on a steam bath for 25 minutes in a mixture of ethanol (1,750 ml.), water (500 ml.), and a solution of concentrated hydrochloric acid (30 ml.) inwater 100 ml.). More water (500 ml.) was then added and the solution set aside to cool. Needles separated and were filtered off to give 153.5 g. of solid melting at 161 C. After recrystallization from aqueous methanol, it melted at 161 to 163 C. The product was a 63 percent yield of N-(1,1-dimethyl-3-chloroacetonyl)-3,5- dichlorobenzamide.

EXAMPLE 13 Preparation of N-( l,1-dimethyl-3,3-dichloroacetonyl)- 3,5-dichlorobenzamide a. Preparation of 2-(3,5-dichlorophenyl)-4,4- dimethyl-5-chloro-5-dichloromethy-oxazoline hydrochloride and its free base Excess chlorine was passed into a solution of N-( l ,1- dimethylpropynyl)-3,S-dichlorobenzamide (25.6 g., 0.1 mole) in carbon tetrachloride (250 ml.) heated under reflux. On cooling, crystals separated and were filtered off to give 34 g. of solid. This was an 85 percent yield of 2-(3,5-dichlorophenyl)-4,4-dimethyl-5-chloro- S-dichloromethyl-oxazoline hydrochloride.

Specific illustrative preparations of Examples 8, 13,

A small sample of this oxazolinehydrochloride was,

treated in ether with aqueous sodium carbonate togive the free base. The product was recrystallized from hexane to give a solid melting at 94 4 95'C.'1t was found to contain by analysis 40.5 percent C, 2.6 percent H, 48.7 percent Cl, 3.8 percent N and 5.1 percent 0; calculated for C H CLE, NO is 39.0 percent C, 2.8 percent H, 49.0 percent Cl, 3.9 percent N and 4.4 percent 0. The product is 2-(3,5-dichlorophenyl)-4,4-dimethyl-5- chloro-S-dichloromethyl-oxazoline.

b. Preparation of N-(1,1-dimethyl-3 ,3- dichloroacetonyl)-3,5-dichlorobenzamide.

2-(3,S-Dichlorophenyl)-4,4-dimethyl-5-chloro-5- dichloromethyl-oxazoline hydrochloride (106g, 0.266 mole.) was heated under refulx in ethanol (1,500 ml.) in the presence of concentrated hydrochloric acid (10ml) and water (64ml.) for 30 minutes. The mixture was then diluted with water (350 ml.) and allowed to cool. A solid separated and was filtered off giving g. of solid melting at 155 to 157 C. This was a 64 percent yield of N-(1,1-dimethyl-3,3-dichloroacetonyl)- 3,5-dichlorobenzamide.

EXAMPLE 14 Preparation of N-( l ,1-dimethy1-3,3 ,3- trichloroacetonyl)-3,5-dichlorobenzamide Chlorine was passed into a mixture of N-(1,ldimethyl-3,3-dichloroacetonyl)-3,5- dichlorobenzamide and 30% N-(1,l-dimethyl-3- chloroacetonyl) -3,5-dichlorbenzamide (52.5 g.) in carbon tetrachloride (525 ml.) at 55 C, while the solution was irradiated with an ultraviolet lamp. After the theoretical quantity of chlorine had been absorbed, the solution was allowed to cool and crystals separated and were filtered off to give 25 g. of solid melting at l37.5 to 140 C. Recrystallization from benzene gave 14.5 g.

melting at 144 to 144.5 C. The product was a 42 percent yield of N-l,1-dimethyl-3,3,3-trichloroacetonyl)- 3 ,S-dichlorobenzamide EXAMPLE 15 Preparation of N-( l ,1-diethyl-3-chloroacetonyl)-3,5- dichloro-benzamide a. Preparation dichlorobenzamide.

An ether solution of 3,5 -dichlorobenzoyl chloride (47 g., 0.225 mole) was allowed to react with 25 g. (0.225 mole) of 3-ethyl-3-aminopent-l-yne (available by the method of Hennion and Teach, J. Am. Chem. Soc. 75, 1653 ()1953), boiling point 114 to 118 C.) in the presence of 18 g. (0.225 )mole of 50 percent aqueous sodium hydroxide solution. The isolated product was recrystallized from benzene/hexane to give 42.5 g. of white solid melting at 98 to C. It was found by analysis to contain 59.5%.C, 5.3% H, 4.9% N, 5.8% 0 and 24.6% C1; calcuated for C l-l Cl No is 59.2% C, 5.3% H, 4.9% N, 5.6% 0 and 24.9% C1. The product is a 69% yield of N-( 1,1-diethylpropynyl)-3,5- dichlorobenzamide. I

b. Preparation of 2-( 3,5-dichlorophenyl)-4,4-diethyl- S-chloro methylene-oxazoline.

A stream of chlorine was rapidly passed into a solution of N-(l ,1-diethylpropynyl)-3 ,5 dichlorobenzamide (14.2 g., 0.05 mole) in 300 ml. of

of N-( 1 ,1-diethy1propynyl)-3,5-

diethyl ether until the theoretical amount (3.6 g., 0.05

removed and the 1411105554 purified by extraction into pentan'e. Removal of the solvent gave l6.9 g. of white oil, whose infrared spectrum was consistent with an oxazoline base. The product is a quantitative yield of 2-(3,5-dichl0rophenyl)-4,4-diethyl-5- chloromethyiene-oxazoline.

d. Preparation of N-(l,l-diethyl-3-chloroacetonyl)- 8 TABLE 111 Compounds of the Formula 5 555151115. 1. b Figures in parentheses are those'calculated from the empirical formula.

X 3,5-d1chloro-benzam1de. p 014. 2-(3,5-Dichloropher1yl)-4,4-diethyi-5- Y CNH-CHzC1 chloromethylene-oxazoline l2g., 0.0375 mole) was hl H3 eated under refulx over night in a mixture of mo cc. of X ethanol, 40 ml. of water and 2 cc. of concentrated hy- (I13) drochlorica'cid. Water (200 ml.) was then added and the gummy precipitate was washed free of starting material with pentane to give 3.5 g. of solid melting at l72.5 to 176 C. The product was a 28 percent yield l eting at N (1,1 dlethyl 3 chloroacetonyl) 3,5 Example x Y Point dichiorobenzamlde. I 1 Br 1-! .11 141-142 Tables i and I] give the identity and physical charac- 2 H H 3 y F H 1-1 l46-H7 terlsucs of typical oxazohnes and the hydrchionde salts c": H r H used to prepare the benzamides of this invention. 5 CF, 1-1- H 135-1365 Tables 111.1v and v givethe identity and physical 3 g 3 $14.1 characteristics of typical examples of the benzamides 3 c1 -c1 11 161 I63 v 10 9 c1 1- 11 111-113.: of this 1n ent n 25 10 1-] 161-162 11 Cl H C1 167.5-168 s 12 CI H F 162-163 I TABLE 1 I Oxazollne Hydrochlorides (or Their FreeBases) of the Formula R1 TABLE IV fi 3 Ole Compounds of the Formula Y- c /C=O HC! y o 1 Meltin int Preparation 3: x Y RI i 11 0. no C1 4- 5 3113- L E 2 0' H CH: CH: 151-1591 (much-n D. H CH5 CH5 155-159. I 11.. H CH; 0H5 -129. 01 F H CH1 CH5 Gummy solid G H OH CH; 0-148. 40 1 (I51) 11. H CH1 CH3 154-151 I H CH3 CH5 115-121. 1.. H CH1 CH3 153-159 K. H on. CH5 115-111 1, H 02H; 04H.) 011.

0 01 CH5 CH1 151-155. N 01 F CH3 H3 151-153. 45

Melting point or N-(l,l-dirnethylpropynyD-Ii-bromobenzanride is Making 1221 11 3; 1501111. 0! N-(t l-dimethylpropynyl)-3-fiuorobenzam1de is Example R] R point P c) CH CH 1 155-157 135.5to136.0 c. l3 3 5 N-(l, l-dimethylpropynyl)-3-ethylbenzamide is an oily solid. 14 CH3 CH5 0 144-1445 4 Free base. 15 Cm, 6,11, 2 172.5-1 76.5

TABLE II Analytical Data b on Oxazoline Buses and Hydrochlorides Preparation I Empirical formula Percent 0 Percent H Percent N Percent 0 Percent halogen A CHI-1.1111131110 1101 43.0 42.5 3.5 3.5) 4.1 (4.2) 5.0 (4s) 13% 11 CmIInClzNO-HCi '4111 (40.5) 4.5 4. 2 I 4.5 4. 5) 3.4 5 5 01134.5 351 o; CnlI nClFNO-IICl 52.3 52.3 4.3 4.4 5.1 5.1 %3 1) cmrrflciNo-nci 51.1 51.4) 5.1 (5.5) 5.1 5.1) 5 3 5. 01,255 2511 1).. CmHnClFaNO'HC'L 45.1 41. 0) 3.5 3.1) 4.0 4.3) c1.20.0 21.1) 1 (11111101510 51.1 52.4) 5.4 5.0) 3.5 4.3) 1 5 5.0) (11,321 33.1 (1. CuH Br NO-HCl. 31.4 34.5) 2.5 2:1) 3.5 3.4) 5.4 (3. 0) 131,315 35. 4) 11.- lI ChNO-IICl 45.0 44.0 3.4 3.4) 4.5 4.3) 4.5 4.11) 01.3114 43. 4 1.- 0111111 815110 I 43.5 49.5) 3.5 3.5) 4.5 (4. s 5.5 5.5 -c1, 35:: (35.5) 1 1- CuIImChFNO-HCl' 45.2 45 4) 3.3 (3.5) 4.5 4.5

CNHmCINO-I-XCI 55.5 55.1) 5.1 5. o) 4.3 (4.3) 5.0 (5. 5) d1, 24.5 2415 L cunucnNo 52.5 52. 4.5 (4.4) 4.2 (4.4 4.5 (5.0 01.33.11 (33.4 11.. C iiwChNO-IICl 44 0 44.1 3.4 3.4 4.3 (4.3) 5.2 (4.5) (:1, 42.5 (43.4)

. ,cnumclgr wonci 45 4 (45.4 4.0 (3.5 4.3 (4. 5

10 TABLE v Analytical DataonBenzamides ofthe Structure i i? Y i JNHCCCHnCl3-s Exampl Empirical formula Percent C Percent II Percent N Percent Percent halogen 1 01211110101510: 45.4 (45.2) 4.1 4.1 4.3 4.4 10.5 10.0 {8 2 cuuucmo: 52.0 52.0) 5.1 4.3) 5.0 (5.1 12.0 11.7 01, 20.0 25.0 3 C II ClFNO4 55.3 55.0) 5.2 5.1 5.3 5.4 jg- 1 0111111011001 02.3 01.5) 0.0 0.4) 5.4 5.5 13.0 (12.0) 01,131 (11.0 5 01111140110100: 50.7 50.3) 4.2 (4.3) 4.5 4.5) Q 0 0,.110011004 50.4 02.3) 0.3 0.0) 4.7 5.2) 12.0 12.0) 0112.0 13.2)

7 0.211111312011004 37.3 (30.3) 3.2 3.0) 3.5 (3.5) 3.0 3.0) s CmHmChNOg 40.7 (40.7) 4.0 (4.2) 4.5 4.5 10.5 10.4 01, 34.3 34.4 9 CnHuCizFNO: 49.3 40.3) 4.4 4.1) 4.7 4.3 $2; 10 0111111013102 03.1 (03.0) 0.5 (0.4) 5.1 (5.2) 12.2 12.0) 01,131 1313 11 01211120110701 40.8 (47.2) 4.2 (4.0) 4.4 4.0) 10.0 10.5 01, 34.0 33.3) 12 01211110141310: 49.3 49.3) 4.1 4.1) 4.7 4.3) g- 13 01211110110102 42.3 (42.0) 3.4 (3.2) 4.0 (4.1) 0.5 (0.3 01,411 4113 14 01111110142002 33.1 (33.2) 2.0 (2.7) 3.0 3.7 3.0 3.5 01,410 47. 0 15 01111110151002 49.4 (50.4) 5.0. (4.3) 3.0 4.2) 0.3 0.0) 01, 31.0 31.0

I Figures in parentheses are those calculated from the empirical formula.

The compounds of this invention were evaluated in a standard greenhouse test known as a preliminary herbicidal evaluation. For these tests seeds of selected crops and weeds were planted in soil in pots. For preemergence tests, these pots were treated immediately with the test compound. For postemergence tests, the seeds were allowed to germinate and the plants to grow for two weeks at which time they were treated by foliar application with the test chemcial. In both types of test the rate of application was l0 pounds per acre l l kilos Preliminary Herbicidal Evaluations (10 lbs/4L); Percent Kill (Preemergcnce Tests) TABLE VI Wild Curly Velvet Example oat Millet Ryegrass Sorghum dock le Flax Tomato 1 40 100 90 90 100 100 100 90 2 70 95 100 90 95 80 100 80 3 50 100 100 100 100 100 100 90 4 60 90 100 100 80 80 100 70 5 70 70 100 100 100 80 100 80 6 50 90 100 70 90 70 100 60 7 80 90 90 80 90 50 100 70 8 80 100 100 100 100 80 99 90 9. 9O 90 100 100 90 100 100 90 10- 100 100 100 100 100 80 100 90 11. 2i) 0 80 80 100 100 90 4O 12. 40 95 100 100 100 70 100 70 1 13. 80 90 99 100 100 60 99 70 14. 70 70 80 70 70 8O 50 50 15 30 0 80 30 60 0 80 50 80 100 30 100 60 30 100 50 50 60 60 100 20 50 70 90 50 30 100 40 80 80 60 20 60 90 80 0 0 0 90 5O 20 J0 90 50 0 40 100 80 60 70 60 30 60 100 100 90 6O 50 100 40 Eli) 60 50 8t) 0 40 30 20 60 0 30 100 100 60 100 40 20 60 ()0 70 40 100 80 20 10 50 60 40 70 0 0 0 0 20 0 50 0 0 0 9O 70 30 80 Table Vl demonstrates the good herbicidal activity of compounds of Formula I. In similar tests compounds of Formula Vlll, the unchlorinated precursors, were found to have. low herbicidal activity.

From Table Vll it is noted that good selective herbicidal action is obtained and particularly tolerant crops include com (l), cotton (T), rice (H), soybean (P') and wheat (C').

Similar preemergence and postemergence green- A preemergence type test similar to the above was house tests were then run in a secondary type herbirun except that the test compound was incorporated cidal test using a lower rate of application and more into the soil, fewer plant species were used and two new plant species planted in flats. For this test the amount species were added. These were of toxicant was 4 pounds per acre (4.4 kilos per hectare). The plant species used were: Monocotylcdonous Plant Botanical Name U, fxm Semfia glaum A crabgrass Dzgrmria sungumalix 1 jute comhoms capsulan-s B millet Sclaria ilalica C wheat Trilicum aestivum D ryegrass Loiium perenne E wild oat Avena fqlua F' Sudan grass Sorghum sydanensis barnyard grass Echimchloa This method could be important in special applications, rice such as where furrow irrigation is practiced.

l corn Zea m ays h d l d Dicmymomus mam 30mm, Name n carrying out t IS test t e see s were p ante in $01 .ilmulsard grassic kaber m flats, covered with a piece of cheese cloth and then wt carrot aycus carom iambsquamrs chenopodl-um (bum with about three fourths mch of soil. The flat was then M curly dock Rumex crispus sprayed with the compound at a rate of 4 lbs. per acre.

I 4 I g, .clvcucaf Ammo" Theophm The compound was then incorporated into the upper soybean Glycine max three-fourths mch of SOll by lifting up the cheese cloth flax -f' and mixing the soil in it. The impregnated soil was then R alfalfa Medicagu saliva mm Lympmim mm, replaced over the seed and the evaluation continued as T m ssypium, hirsulu for a regular preemergence test. Table V!" gives the Table VI] gives the results. results.

' TAEIJETTI i v Secondary Hcrbioidal Evaluations (4 lbs./A.); Percent Kill of Plant Species; Preemorgouce Tests oo o oo o oo oo o oo so -10 0o 0 0 o o 0 100 o 100 20 so so so 100 so 0 100 o 20 o 70 0 100 o 70 2o 90 no so no so 50 100 o 0 60 o no 0 no so so so o 100 no 100 o 30 o 20 oo 0 so 20 7o 90 9o 90 T 0 oo o o o 0 so 0 o 10 4o so 0 o oo 0 100 o 0 so 0 o oo o 0 20 so so 0 so so 0 oo o 2o 40 20 o 100 0 so 20 oo 90 so 100 100 so 100 0 4o 40 o oo o 50 20 so oo o 00 5o 0 100 o 0 0 20 o o 0 40 o 20 o o o o o o o o 20 0 o no 0 so 10 so no so 100 so to so 20 40 40 so 0 o o o o o o 0 so so 0 0 o 7 oo 10 0 lo 0 o o 30 so o no 0 100 so 0 o o 0 so 0 o o o o 30 o o 30 o o o 0 0 so 0 2o 0 3o 0 20 20 o 100 so 0 2o 0 o 0 0 30 o o o o 20 o o no to 40 oo o 20 o 0 0 o o 50 o o 30 o 40 o 30 2o 0 3o 0 10 10 1o 20 0 1o 2o 10 o so so so 0 o o o o o 20 o 20 o 0 o no no so oo o o o o o o 20 1o 30 2o 10 0 no 70 so oo o 40 0 o o u 30 o 10 2o 10 40 oo 7 30 oo o so 0 20 0 1o 40 2o 10 10 to 0 so no 70 so 0 so o o o 10 o o o o o o o o o oo o o o o 0 20 o o o o o 10 so oo o 40 o 20 o o o 30 o to o 20 o 20 50 o 20 7o 0 50 o o 30 o o o 30 o o o 50 50 o to o o o o O l) 0 0 0 0 0 0 0 0 0 o o u o o o 20 o o 0 2o 0 0 so 0 2o 10 o 20 0 10 TABLE VIII Herbicidal Evaluations by Soil Incorporation; Percent Kill of Plant Species Example B o D E F G H I t" K u N P Q R T Y o 05 o no 100 to 0 100 so 100 100 o r o 0 20 100 20 so so 10 so 100 50 0 so 0 0 so 20 100 o 05 so 20 so 100 30 100 so 0 so 0 o o 100 20 so 7 30 o 90 0 too 0 o so so 0 90 10 100 20 so 90 70 20 100 too 100 so 0 so 0 o 100 o 70 2o 70 4o 0 so 7 so 100 o o 0 3o 0 30 o 100 20 T0 90 4o 20 100 so too 20 o 90 90 0 9o 10 100 20 no 100 so so so so 100 0 0 so 7 o 100 20 100 20 100 100 90 30 100 0 100 20 0 so 70 0 10 100 20 100 100 so o 100 o 100 o o 90 r 0 so 20 so 0 so 100 o o o 100 o o so so o 100 so oo 2o 90 100 60 so so 100 50 o 60 5o ;o 100 o 100 oo no on 20 o 100 0 loo 0 5o 90 5o 0 0 o 100 o 21; 40 o u am so so o 70 I. 0 1c M mo 20 on m o o 70 mo 1m 41 in 1m 30 o 40 In field tests, the compound of Example 8 has given good control of ragweed, (Ambrosia spp.), giant foxtail (Sezaria faberi) and wild lettuce (Lactuca spp.). Such crops as corn, cotton, soybean, tomato, cucumber (Cucumis saliva) and peanuts (Arachnis hypogaea) have 5 Wettable powder formulations comprise an N-(l,ldialkyl-3-chloroacetonyl) benzamide admixed in a solid carrier along with a surface active agent(s) which gives this type of formulation its wettability, dispersibility and spreading characteristics. Solid carriers which are suitable for preparing these wettable powder formulations are those which have been rendered agronomically suitable by pulverizing devices and may be organic or inorganic in nature. Suitable organic carriers are soybean, walnut or wood flower or tobacco dust; and suitable inorganic ones are clays of the montmorillonite (bentonite), kaolinite or fullers earth types; silicas such as diatomaceous earth and hydrated silica; silicates such as talc, pyrophyllite, or alkaline earth sili- 5 cates, and calcium and magnesium carbonates. A sur- W .lohnsongrass Sorghum halepense x peas San-Wm factant or mixture of surfactants lS added to the wetta- TABLE??? Herbicidal Evaluations by Soil Incorporation; Percent Klll of Plant Species lrvpamtion B C D E F G H I K M N O P Q R T U V W X 50 100 20 7O 00 30 20 0 100 20 0 0 0 0 100 0 90 0 100 00 100 0 0 100 100 0 100 50 0 0 99 0 90 0 95 20 05 0 60 100 40 0 100 100 0 100 0 00 0 0 100 0 60 ll The compositions of this invention comprise an N (l,l-dialkyl-3-chloroacetonyl)-3-(or -3,4-, -3,5- or -3,4,5-) substituted benzamide together wth with agronomically acceptable carrier. By an agronomically acceptable carrier is meant any substance which can be used to dissolve, disperse, or diffuse the chemical within it, without impairing the effectiveness of the toxic agent, which is not permanently deleterious to the soil in any chemical or physical manner and which is usually non-phytocidal to the agricultural crops to be protected. The compositions may be in the form of solutions, emulsifiable concentrates, wettable powders, granules or dusts. One or more liquid or solid carrier's may be used for a particular herbicidal composition.

An emulsifiable concentrate is made by dissolving an N-(l,l-dialkyl-3-chloroacetonyl) benzamide in a solvent to which one or more surfactants are added. Suitable solvents or liquid carriers for use in preparing these emulsifiable concentrates may, for example, be found in the hydrocarbon and ketone'classes of organic solvents such as xylene, acetone, isophorone, mesityl oxide, cyclohexanone and mixtures of these. Preferred solvents are ketone-hydrocarbon mixtures such as isophorone-xylene. The emulsifying agents used are surfactants of the anionic, cationic, or non-ionic types and mixtures thereof. Representative of the anionic surfactants are fatty alcohol sodium sulfates, calcium alkylbenzenesulfonates and sodium dialkyl sulfosuccinatcs. Representative of the cationics are (higher alkyl) dimethylbenzyl-ammonium chlorides. Representative of the nonionics are condensation products of alkylene oxides with fatty alcohols, alkyl phenols, mercaptans, amines or fatty acids, such as dinonylphenoxypolyethoxycthanol in which there are 8 to. I00 ether groupings and similar polyethoxy compounds prepared with other hydrophilic groupings, including esters of long chain fatty acids and mannitan or sorbitan, which are reacted with ethylene oxide.

The following compositions arc typical of emulsifiable concentrate formulations when solvents are used.

Parts/100 Parts Total b le powder formulation. Suitable dispersing agents are sodium lignin sulfonate, sodium formaldehydenaphthalene sulfonate, or sodium N-methyl-N-higher alkyl taurates. Wetting agents useful for this purpose include higher alkylaryl sulfonates such as calcium dodecylbenzenesulfonate, long-chained alcohol sulfates, sodium alkylphenoxypolyethoxyethyl sulfonates, sodium dioctyl sulfosuccinate, and ethylene oxide adducts with fatty alcohols or with higher alkylphenols, such as octylphenoxypolyethoxyethanol in which there are 8 to 80 ether groupings and similar polyethoxy compounds made from stearyl alcohol. Operative spreading or adhesive agents include glycerol mannitan laurate or a condensate of polyglycerol and oleic acid modified with phthalic anhydride. Additionally, many of the surfactants discussed above function as spreading and adhesive agents. The active ingredient content of the wettable powders may be in the range of about 20 to 80 percent however, the preferred range of concentration is 50 to percent.

The following compositions are typical for wettable powder formulations:

Parts/ I 00 Parts Total Dust concentrates are made by incorporating an N- (l ,l-dialkyl-3-chloroacetonyl) benzamide of this invention into a solid carrier such as finely powdered clays, talc, silica and synthetic silicates, alkaline earth carbonates and diluents of natural origin, such as tobacco dust or walnut shell flour. Granular formulations are made from similar type solid carriers except that the particle size is larger, in the range of l5 to 60 mesh. A small amount of dispersing'agent may be incorporated into these solid formulations. The concentration of active ingredients in these dust or granular formulations may be in the range of 0.5 to 15 percent.

It will be seen from the above that the compositions of this invention may contain 20 to 99.5 percent of carrier based on the total weight of the composition, depending on whether it is in the form of a solution, an emulsifiable concentrate, a wettable powder, a dust or a granular formulation.

A particularly convenient method for making solid formulations is to dissolve the active ingredient in 21 volatile solvent, such as acetone, apply this solution to the solid carrier with thorough mixing, and then remove the solvent by allowing it to evaporate at either normal or reduced pressure.

Generally for use as herbicides the active ingredient is applied at the rate of about 0.5 to or more pounds per acre (0.55 to It kilos per hectare) with 1 to 4 pounds per acre (1.1 to 4.4 kilos per hectare) preferred.

Representative compounds of Formula I have demonstrated good fungicidal activity for the control of fungi in the class of Phycomycetes. The class of Phycomycetes includes such genera as Phytophthora, Plasmopora, Peronospora and Pseudoperonospora. These compounds have not shown a high degree of fungicidal activity against the classes of fungi known as Fungi lmperfecti and Ascomycetes.

Tests involving the control of late blight, Phytophthora infestans, of potato and tomato were run as described below. Succulent 6-8 inch high (4-5 week old) potato plants and 3-4 inch high tomato plants were used. The plants were sprayed with a 1,200 ppm. solution of the test compound in a solvent system consisting of acetone:methanol:water at 25:25:50 by hand spraying to just wet the foilage with a minimum of runoff. The plants were then allowed to dry and placed in a greenhouse for 2-3 days. The plants were then subjected to simulated rain by overhead spraying with a garden hose equipped with a Fogg-it nozzle placed about 3 feet above the plants so that approximately 1 inch of rain was delivered in about 2.5 minutes onto the foliage as a fine spray. The plants were then inoculated with a spore suspension of Phytophthora infestans containing 30,0000 40,000 spores per cc. The plants were then placed ina 100 percent humidity chamber at 60 F. for about 36 hours then moved to a 70 F. growing room for 1-2 days. The per cent disease that had developed in comparison with untreated controls was then read by means of lesion counts. Table X gives the results with representative compounds of this invention.

TABLE X Control of Phytophthora infestans Disease on Example Potato Tomato 1 2 12 2 7 87 3 22 72 4 12 62 5 5 35 7 0 10 8 0 2 Q 0 t1 t0 5 1 Representative compounds of Formula l were found to control the grape downy mildew organism, Plasmopora viricola. ln this test 6-8 inch high Seibel grape seedlings were sprayed to run-off using a series of dosages of spray mixtures containing 1,200 ppm., 300 ppm. and 75 ppm. of the test compound. Three replicates for each dosage were used and untreated plants were employed as controls. The plants were held for 24 hours and were then inoculated with a spore suspension of Plasmopora viticola containing about 75,000 spores per cc. The plants were then held for 1 week under controlled temperature and humidity conditions until the downy mildew disease developed. The percent control was then observed. Table XI gives the results.

TABLE Xl Control of Plasmopara viticola Control at Example 1200 ppm 300 ppm ppm 1 100 I00 2 100 100 92 3 100 100 100 4 100 98 84 5 100 100 98 7 I00 100 100 8 100 100 100 9 100 100 100 10 I00 100 66 l l 100 100 100 12 100 100 100 14 100 100 I00 Representative compounds of Formula 1 were evaluated for the control of downy mildew on broccoli caused by Peronospora parasitica. ln this test, the test compound was dissolved in a 50:50 acetone-methanol solution and diluted with water to give concentrations of 1,200ppm., 300 ppm. and ppm. of the compound. Each concentration of each compound was then sprayed to run-off onto three 4-5 inch high broccoli seedlings and the plants allowed to dry. The treated plants were then weathered in a humidity cabinet overnight and again allowed to dry. The plants were then inoculated with a suspension of 'Per'onospora parasitica spores containing about 10,000 spores per cc. The plants were then held for 6 days to allow the disease lesions to develop and the amount of disease determined based on an index rating of 0-4 where 0 no infection and 4 severe infection. Table Xll gives the results.

TABLE Xll Control of Peronospora parasitica Index Rating at In field tests, the compounds of Examples 8 and 14 controlled downy mildew of cucumbers caused by Pseudoperonospora cubensis.

ln tests on Alternaria, Cercospora, Helminl hosporium, Piricularia and Verticillium genera of fungi, representative compounds of Formula I were low in activity.

Typical oxazoline hydrochlorides of the type of Formula V] have been demonstrated to have fungicidal activity. A test on late blight, Phylophthora infesmns, of tomato was conducted similarly to that described above for the data in Table X except subjecting the plants to simulated rain was omitted. The amount'of disease control was recorded by the following rating system Rating it Disease Control A 90-100 B 70-90 C+ less than 70 C no control Table Xlll gives the results for typical preparations of compounds of Formula V1 and their free bases at two dosage rates.

TABLE Xlll Control of Phytophthora Infestans Rating at Preparation 1200 ppm. 150 ppm. B A A D B C E A A G A A J A A- M A- B N A- B+ "Sec Table l Oxazoline salts conforming to the structure wherein R, R X, X and Y have the meanings given above for Formula l and Hal is bromine or chlorine or a mixture thereof and their free bases have also demonstrated excellent fungicidal activity.

A compound of Formula [X where Hal is bromine may be made by a bromination sequence of compounds in which C1 in the equations given above is replaced by Br The following equations depict this The reaction conditions for the-bromination are the same as for the chlorination.

Typical structures corresponding to Formula 1X arc Preparation 2-(3,5-dichlorophcnyl)-4,4-dimethyl-5- chloro-S-dichloromethyl-oxazoline hydrochloride (see Example 131: above) P 2-(3,5-dichlorophenyl-4,4-dimethyl-5-chloro- 5-dichloromethyl-oxazoline (see Example 13a above) 2-(3,5-dichlorophenyl) 4,4-dimethyl-5- bromo-5-dibromomethyl-oxazoline hydrobromide. This is a solid melting at 210 C. (with decomposition). It was found to contain by analysis 25.0% C, 1.9% H, 54.5 Br, 11.9% Cl, 2.5% N and 3.5% 0; calculated for C,,H Br,Cl,NOHBr is 24.6% C, 1.9% H, 54.6% Br, 12.1% C1, 2.4% N and 2.7% O.

2-(3,S-dichlorophenyl)-4,4-dimethyl-5- bromo-S-dibromoethyl-oxazoline. This is a solid melting at l-125 C. (with decomposition). It was found to contain by analysis 29.4% C, 2.0% H, 46.9% Br, 14.1% C1, 2.9% N and 3.9% 0; calculated for C,,H Br Cl,NO is 29.1% C, 2.0% H, 48.4% Br, 14.3% CI, 2.8% N and 3.2% O.

20 Table XIV gives the fungicidal results for typical compounds of Formula IX and their free bases when evaluated on Phytophthora infestans by the technique described for Table Xlll and on Plasmopora viticola by the technique described for Table XI.

TABLE XlV Fungicidal Activity Rating vs. Control of P. infeatans P. viticola Preparation at 150 ppm at 300 ppm 0 a A P A 100 Q A 100 R A 100 In persistency-type tests wherein the treated plants were weathered by meansof rain before inoculation Preparation 0 gave excellent results for the control of Phytophthora infestans and Preparation R gave excellent results for the control of Plasmopora viticola.

For use as fungicides the N-(l,l-dialkyl-3- chloroacetonyl) benzamides and the oxazoline structures of Formulas VI and [X are usually formulated. Emulsifiable concentrates, flowable emulsion concentrates and wettable powders are typical formulations. They may also be dissolved in water-miscible solvents to give solutions which may be easily extended with water. Dilute sprays of the compounds may be applied at concentrations of 0.05 to 10 pounds (0.023 to 4.5 kilos) per 100 gallons (378 liters) of spray and preferably at 0.1 to 2 pounds (0.045 to 0.9 kilos) per 100 gallons of spray. In more concentrated sprays, the active ingredient is increased by a factor of 2 to 12. With dilute sprays, applications are usually made to the plants until run-off is achieved, whereas with more concentrated sprays the materials are applied as mists. For practical purposes, the compounds of this invention should be used as foliar fungicides only on crops which are tolerant to an amount which is fungicidally effective.

When a chemical preparation results in a mixture of products, such as when the chlorination ofa compound of Formula Vlll gives more than one product, the mixture may be used as such without separation of the individual components.

The compounds of this invention may be utilized as the sole biocidal agent or they may be employed in conjunction with other biocidal agents such as bactericides, fungicides, herbicides, insecticides, miticides and comparable pesticides. 7

Other herbicides which can be incorporated to provide additional advantages and effectiveness include:

Carboxylic Acids and Derivatives 2,3,6-trichlorobenzoic acid and its salts 2,3,5,-tetrachlorobenzoic acid and its salts 2-methoxy-3,S,6-trichlorobenzoic acid and its salts 2-methoxy-3,6-dichlorobenzoic acid and its salts 2-methyl-3,fi-dichlorobenzoic acid and its salts 2,3-dichloro-6-methylbenzoic acid and its salts Carbamic Acid Derivatives ethyl N,N'di(n'propyl)thiolcarbamate propyl N,N-di(n-propyl)thiolcarbamate ethyl N-ethyl-N-(n-butyl)thiolcarbamate propyl N-ethyl-N-(n-butyl)thiolcarbamate 2-chloroallyl N,N-diethyldithiocarbamate N-methyldithiocarbamic acid salts ethyl 1-hexamethyleneiminecarbothiolate isopropyl N-phenylcarbamate isopropyl N-(m-chlorophenyl)earbamate 4-chloro-2-butynyl N-(m-chlorophenyl)carbamate methyl N'(3,4-dichlorophenyl)carbamate Phenols dinitro-o-(sec.-butyl)phenol and its salts pentachlorophenol and its salts Substituted Ureas 3-( 3,4-dichlorophenyl)-l l -dimethylurea 3-(4-chl0rophcnyl )-l l -dimethylurea 3-phenyl-l ,l -dimethylurea 3-( 3 ,4-dichlorophenyl)-3-methoxy-l l -dimethylurea 3-(4-chlorophenyl)-3-methoxy-l l -dimethylurea 3-( 3 ,4-dichlrophenyl l -n-butyll -methylurea 3-( 3,4-dichl0rophenyl l -methoxy-l -methylurea 3-(4-chlorophenyl)-l -methoxyl -methylurea 3-( 3',4-dichiorophenyl )-l l ,3-trimethylurea 3*( 3 ,4-dichlorophenyl )-l l -diethylurea dichloral urea Substituted Triazines 2-chloro-4,6-bis(ethylamino )-s-triazine 2-chloro-4-ethylamino-6-isopropylamino-striazine 2-ch'loro-4 ,6-bis( methoxypropylamino)-s-triazine 2-m'eth0xy-4,6-bis( isopropylamino )-s-triazine 'l M0104-clhyluminu-6-( 3-methoxypropylamino)-s- H'lllllllt.

Z-methylmercapto-4,6-bis(isopropylamino )-s-triazim: 2-methylmercapto-4,6-bis(ethylamino )-s-triazine 2-methylmercapto-4-ethylamino-6-isopropylamino-striazine 2-chloro-4,6-bis(isopropylamino)-s-triazine 2-methoxy-4,6-bis(ethylamino )-s-triazine 2-methoxy-4-ethylamino--isopropylamino-s-triazine 2methylmercapto-4-(Z-rnethoxyethylamino)-6-isopropylamino-s-triazine Diphenyl Ether Derivatives 2,4-dichloro-4'-nitrodiphenyl ether 2,4,6-trichloro-4'-nitrodiphenyl ether 2,4-dichloro-6-fluoro-4'-nitrodiphenyl ether 3-methyl-4-nitrodiphenyl ether 3,5-dimethyl-4-nitrodiphenyl ether 2,4'-dinitro-4-trifluoromethyldiphenyl ether An ilides N4 3,4-dichlorophenyl)propionamide N-( 3 ,4-dichlorophenyl )methacrylamide N-( 3-chloro-4-methylphenyl)Q-mcthylpcntanamide N-( 3,4-dichlorophenyl )trimethylacetamidc N-( 3,4-dichlorophenyl )-a,a -dimcthylvaleramide Uracils 5-bromo-3-s-butyl-6-methyluracil S-bromo-S-cyclohexyl-l ,6-dimethyluracil 3-cyclohexyl-5,6-trimethyleneuracil 5-bromo-3-isopropyl-fi-methyluracil 3-tert-butyl-5-chloro-6-methyluracil Nitriles 2,6-dichl0robenzonitrile diphenylacetonitrile 3,5-dibromo-4-hydroxybenzonitrile 3,5-diiodo-4-hydroxybenzonitrile Other Organic Herbicides 2-chl0ro-N,N-diallylacetamide N-( l ,1-dimethyl-2-propynyl)-3,S-dichlorobenzamide maleic hydrazide 3-amino-1 ,2,4-triazole monosodium methanearsonate disodium methanearsonate N,N-dimethyl-a,a-diphenylacetamide N,N-di-(n-propyl)-2,6-dinitro-4-trifluoromethylaniline N,N-di-(n-propyl)-2,6-dinitro-4-methylaniline N,N-di-(n-propyl)-2,6-dinitro-4-methylsulfonylaniline O-(2,4-dichlorophenyl)-O-methyl-isopropylphosphoramidothio a te dirnetliyl-l'leitiuilfliifiilillithalimide, Bordeaux 4-amino-3,5,6-trichloropicolinic acid 2,3-dichlorol ,4-naphthoquinone di(methoxythiocarb onyl)disulfide 6,7-dihydrodipyrido[1,2-a:2',l '-c]pyrazidinium salts l,l '-dimethyl-4,4'-bipyridinium salts 3,4,5,6-tetrahydro-3,S-dimethyl-Z-thio-ZH-l,3,5- thiadiazine Other fungicides which may be combined with the compounds of this invention include dithiocarbamates and derivativessuch as ferric dimethyldithiocarbamate (ferbam), zinc. dimethyldithiocarbamate (ziram), manganese ethylenebisdithiocarbamate (maneb) and its (50- V ordination product with zinc ion, zinc ethylenebisdithiocarbamate (zineb). tetramethylthiuram disulfide (thiram) and 3,5-dimethyl-l ,3,5,2H-tetrahydrothiadiazine- 2-thione; nitrophenol derivatives such as dinitro-(lmethylheptyl)phenyl crotonate (dinocap), Z-sec-butyl- 4,6-dinitrophenyl 3,3-dimethyl-acrylate (binapacryl) and 2-sec-butyl-4,6-dinitrophenyl isopropyl carbonate; heterocyclic structures such as N-trichloro-methylthiotetrahydrophthalimide (captan), N-trichloromethylthio-phalimide (folpet), 2-heptadecyl-2-imidazoline (glyodin), 2,4-dichloro-6-(o-chloro-anilino)-s-triazine, diethyl phtalimidophos-phorothioate, S-amino-llbis(dimethylamino)phosphinyl]-3-phenyl-l,2,4- triazole, 2,3-dicyano-l,4-dithia-anthraquinone (dithianon), 2-thio-l ,3-dithio[4,5-b quinoxaline (thioquinox), l-(butylcarbamoyl)-2-benzimidazole carbamic acid methyl ester (benomyl), 4-(2-chlorophenylhydrazono)- 3-methyl-5-isoxazolone and bis(p-chlorophenyl)-3- pyridinemethanol; and miscellaneous fungicides such as dodecylquanidine acetate (dodine), 3-[2-(3,5- dimethyl-2-oxycyclohexyl)-2-hydroxyethyl]glutarimide (cyclohexamide), phenylmercuric acetate, N- ethylmercuri-l ,2,3 ,6-tetrahydro-3 ,-endomethano- 3,4,5,6,7,7-hexachlorophthalimide, phenylmercuric monoethanolammonium lactate, 2,3-dichloro-l,4- naphthoquinone, pyridine-Z-thiol-l-oxide, Bordeaux mixture and sulfur.

We claim:

1. A herbicidal composition comprising 1) a carrier and 2) an effective amount of an active ingredient having the formula:

lt 0 II l I? --r'.NHrt rtrin tn- X and X are selected from the group consisting of 2. A composition according to claim 1 containing from 0.5 percent to percent of said active ingredicut.

3. A composition according to claim 1 which additionally contains at least one surfactant.

4. A composition according to claim 1 wherein R and R of the formula of said active ingredient are methyl.

5. A composition according to claim 1 wherein said active ingredient is N-( l ,l-dimethyl-3- chloroacetonyl)-3,5-dichlorobenzamide.

6. A method for controlling undesirable plant growth comprising applying to the area to be controlled a herbicidal amount of a herbicidal composition comprising 1) an active ingredient having the formula:

wherein R' and'R are individually selected from the group consisting of methyl and ethyl;

X and X are selected from the group consisting of hydrogen, bromo, chloro, fluoro, methyl, ethyl and trifluoromethyl with the proviso that only one of X and X may be hydrogen;

Y is selected from the group consisting of hydrogen,

bromo, chloro, fluoro and methyl and n is an integer from 0 to 2 inclusive together with 2) a carrier.

7. A method for controlling undesirable plant growth comprising applying to the area to be controlled a herbicidal amount of a composition according to claim 6 wherein R and R of said active ingredient are methyl.

8. A method for controlling undesirable plant growth comprising applying to the area to be controlled a herbicidal amount of a composition according to claim 6 wherein said active ingredient is N-( 1,1-dimethyl-3- chloroacetonyl) -3,5-dichlorobenzamide.

9. A method according to claim 6 wherein the active ingredient of the herbicidal composition is applied at the rate of about 0.5 to 10 pounds per acre. 

2. A composition according to claim 1 containing from 0.5 percent to 80 percent of said active ingredient.
 3. A composition according to claim 1 which additionally contains at least one surfactant.
 4. A composition according to claim 1 wherein R1 and R2 of the formula of said active ingredient are methyl.
 5. A composition according to claim 1 wherein said active ingredient is N-(1,1-dimethyl-3-chloroacetonyl)-3,5-dichlorobenzamide.
 6. A method for controlling undesirable plant growth comprising applying to the area to be controlled a herbicidal amount of a herbicidal composition comprising 1) an active ingredient having the formula:
 7. A method for controlling undesirable plant growth comprising applying to the area to be controlled a herbicidal amount of a composition according to claim 6 wherein R1 and R2 of said active ingredient are methyl.
 8. A method for controlling undesirable plant growth comprising applying to the area to be controlled a herbicidal amount of a composition according to claim 6 wherein said active ingredient is N-(1,1-dimethyl-3-chloroacetonyl) -3,5-dichlorobenzamide.
 9. A method according to claim 6 wherein the active ingredient of the herbicidal composition is applied at the rate of about 0.5 to 10 pounds per acre. 